A LIST OF SOURCES 



TREVIRANUS, GOTTFRIED REINHOLD. See vol. iv., p. 159. 

 Biologic, oder Philosophic dcr lebenden Natur, 1802. 



WEBER, E. H. See vol. iv., p. 263. 



The statement of "Weber's Law" was first made in 

 articles by Weber contributed to Wagner's Handworter- 

 buch der Physiologic, but is again stated and elaborated 

 in Fechner's Psychophysik. (See Fechner.) 

 WEISMANN, AUGUST. See vol. iv., p. 179. 



Studies in the Theories of Descent. Trans, by Professor 

 R. Meldola, London, 1882. The introduction to this work 

 was written by Darwin. 



WOHLER, FRIEDRICH. (See Liebig and Wohler.) 

 WUNDT, WILHELM MAX. See vol. iv., p. 268. 



Grundzugc der physiologischen Psychologic, 1874. Many 

 articles by Wundt have appeared in the Philosophische 

 Studien, published at Leipzig. 



V. ASTRONOMY 



Astronomischc Gesellschaft. 



A quarterly journal of astronomy published in Leipzig. 



BERRY, ARTHUR. 



A Short History of Astronomy, New York, 1899. 

 BERTRAND, J. L. F. 



Les jondateurs de Vastronomie modern: Copcrnic, Tycho 

 Brake, Kepler, Galileo, ct Newton, Paris, 1865. This 

 gives an interesting account of the lives and works of 

 these philosophers. 



FLAMMARION, C. 



Vie de Copernic, et histoire de la decouverte du systeme 

 du monde, Paris, 1872. 

 FORSTER, W. 



Johann Kepler und die Harmonic der Sphcren, Berlin, 

 1862. 



JENSEN, P. 



Die Kosmologie der Babylonier, Strasburg, 1890. 

 261 



